Did you put the pads on correctly? Otherwise, this will cause some vibration problems.
The solution is very simple. Get a good flat sanding block, some 200 grit wet/dry sandpaper. Remove rotors and wet sand surfaces to clean deposits.
Your rotors are likely not warped unless you've been tracking the car and you're a very aggressive driver to boot.
The Q pads are very nice quiet street pads that generate very little dust. The downside is that they eventually build up on the rotors.
I switched to Wilwood's BP-10 pads and the deposit issue is gone and the pads are still fairway pads, but even more aggressive. The downside is that they are more metallic, so they will deposit more black dust and can sometimes make a little noise.
My advice would be to clean the rotors and change the pads at the same time and position them correctly.
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